pluck/screw/summon up courage

pluck up someone's courage

to bolster someone's, including one's own, courage. I hope you are able to pluck up your courage so that you can do what has to be done. Some good advice from a friend helped pluck up my courage.
See also: courage, pluck, up

screw up one's courage

Fig. to build up one's courage. I guess I have to screw up my courage and go to the dentist. I spent all morning screwing up my courage to take my driver's test.
See also: courage, screw, up

pluck/screw/summon up (your/the) ˈcourage (to do something)

force yourself to be brave enough to do something: I had liked her for a long time, and eventually I plucked up the courage to ask her out.I finally screwed up my courage and went to the dentist.
See also: courage, pluck, screw, summon, up